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Integrability and chemical potential in the (3+1)-dimensional Skyrme model
P. D. Alvarez, F. Canfora, N. Dimakis +1
Using a remarkable mapping from the original (3+1)dimensional Skyrme model to the Sine-Gordon model, we construct the first analytic examples of Skyrmions as well as of Skyrmions--…
Integrability of the Einstein-nonlinear -model in a nontrivial topological sector
Andronikos Paliathanasis, Tim Taves, P. G. L. Leach
The integrability of the\ Einstein-nonlinear -model with nonvanishing cosmological charge is studied. We apply the method of singularity analysis of differential equ…
Topologically non-trivial configurations in the 4d Einstein--nonlinear -model system
Fabrizio Canfora, Nikolaos Dimakis, Andronikos Paliathanasis
We construct exact, regular and topologically non-trivial\ configurations of the coupled Einstein-nonlinear sigma model in (3+1) dimensions. The ansatz for the nonlinear fi…
Cosmological Einstein-Skyrme solutions with non-vanishing topological charge
Fabrizio Canfora, Andronikos Paliathanasis, Tim Taves +1
Time-dependent analytic solutions of the Einstein-Skyrme system --gravitating Skyrmions--, with topological charge one are analyzed in detail. In particular, the question of whethe…